Schneider Electric 312 manual Characteristics and functions of the terminals

Hardware setup

Characteristics and functions of the terminals

Terminal	Function	Electrical characteristics
R2A	Configurable relay outputs:	• Minimum switching capacity: 10 mA for 5 V c
R2B	1 relay logic output, one “N/C”	• Maximum switching capacity on resistive load (cos ϕ = 1 and L/R = 0 ms):
R2C	contact and one “N/O” contact	5 A for 250 V a and 30 V c
	with common point.	• Maximum switching capacity on inductive load (cos ϕ = 0.4 and L/R = 7 ms):
		2 A for 250 V a and 30 V c
		• Sampling time: 8 ms
		• Service life: 100,000 operations at maximum switching power
COM	Analog I/O common	0 V
+10	Power supply for reference	• +10 V (+ 8% - 0%)
	potentiometer (2.2 to 10 kΩ)	• 10 mA max
		• Protected against short-circuits and overloads
AI2	Analog voltage input	Bipolar analog input 0 ± 10 V (maximum safe voltage ± 30 V)
		The + or - polarity of the voltage on AI2 affects the direction of the setpoint and
		therefore the direction of operation.
		• Impedance: 30 kΩ
		• Resolution: 0.01 V, 10-bit + sign converter
		• Precision ± 4.3%, linearity ± 0.2%, of maximum value
		• Sampling time: 8 ms
		• Operation with shielded cable 100 m maximum
AI3	Analog current input	Analog current input X-Y mA by programming X and Y from 0 to 20 mA:
		• Impedance: 250 Ω
+24	Logic input power supply	• + 24 V protected against short-circuits and overloads, minimum 19 V, maximum 30 V
		• Maximum customer current available: 100 mA
LI1	Logic inputs	Programmable logic inputs
LI2		• Impedance: 3.5 kΩ
LI3		• + 24 V internal or 24 V external power supply (min. 19 V, max. 30 V)
		• Max. current: 100 mA
		• Max. sampling time: 4 ms
		Source position: Positive logic State 0 if < 5 V or logic input not wired, state 1 if > 11 V
RJ45	Communication port	Connection for SoMove software, Modbus, remote display, loader tools.
SW1	Addressing switches	See page 14.
SW2	Line termination switches	See page 11.
PROFIBUS	Communication	PROFIBUS DP open style connector for connection to the fieldbus, see page 11.
DP

10 S1A10386 10/2009